The Ryukin, a robust and visually appealing type of goldfish, possesses a pointed head and a distinctive hump located behind the head. It can exhibit either long or short fins, coupled with a triple or quadruple tail. The dorsal fin is notably elevated, and the caudal fin often extends to twice the length of the body. Ryukins showcase a diverse range of colorations, including deep-red, red-and-white, white, silver, blue, black, orange, lavender grey, iron, and calico. As a well-suited aquarium fish, the Ryukin can attain a length of up to 20 centimetres. In certain cases, individuals have been reported to grow up to 10 inches, particularly in spacious aquariums and commercial ponds.